Reversible action block inserts into an AR-15 upper or lower receiver and clamps into a vise, firmly positioning the part for nearly any gunsmithing task. Precision CNC-Machined from polyethylene, this action block is impervious to all oils and solvents. Hammer block is ideal for checking a trigger job. Includes a hammer block which snaps into the action block, this eliminates the need to catch the hammer when testing trigger pull.
Note: The CrossTac Armorer's Action Block was designed for torquing suppressors, muzzle brakes, flash hiders, and accessories, not for torquing barrels. Doing so can damage the unit.
- Milled from solid polyethylene
- Resistant to solvents and oils
- Locks into magazine well and can then be clamped into a vise